The Alhambra collection has six sub-collections; Byzantine Alhambra, Lucky Alhambra, Magic Alhambra, Pure Alhambra, Sweet Alhambra, and Vintage Alhambra. There's not very much difference between some of the sub-collections. I got a bit confused because Princess Charlene's watch is from the Vintage Alhambra sub-collection but when I first read it I thought it meant vintage as in an older piece.

Van Cleef & Arpels - Vintage Alhambra Bracelet Watch
"Vintage Alhambra Bracelet Watch. 26 mm x 26 mm white gold case; white gold bezel; white mother-of-pearl dial; white gold crown. White gold and white mother-of-pearl bracelet; white gold clasp; quartz movement."